珠江水体悬浮物颗粒有机碳稳定同位素组成及分布特征

doi:10.13249/j.cnki.sgs.2003.04.471

地理科学 ›› 2003, Vol. 23 ›› Issue (4): 471-476.doi: 10.13249/j.cnki.sgs.2003.04.471

珠江水体悬浮物颗粒有机碳稳定同位素组成及分布特征

魏秀国^1,2,3, 沈承德¹, 孙彦敏¹, 易惟熙¹

1. 中国科学院广州地球化学研究所, 广东广州 510640;
2. 广东省生态环境与土壤研究所, 广东广州 510650;
3. 广东省农业环境综合治理重点实验室, 广东广州 510650

收稿日期:2002-09-05 修回日期:2002-11-20 出版日期:2003-07-20 发布日期:2003-07-20
基金资助:
国家自然科学基金(49973009、国家重点基础研究发展规划项目(G1999043401)、中国科学院知识创新项目(KZCX2-SW-118,KZCX2-108)、广东省自然科学基金(批准号:010503、20000899)项目.

Characteristic of the Organic Carbon-isotope Composition and Contribution of Suspended Matter in the Pearl River

WEI Xiu-Guo^1,2,3, SHEN Cheng-De¹, SUN Yan-Min¹, YI Wei-Xi¹

1. Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, Guangdong 510640;
2. Guangdong Institute of Eco-environment and Soil, Guangzhou, Guangdong 510650;
3. Guangdong Laboratory of Integrated Control of Agro-environment, Guangzhou, Guangdong 510650

Received:2002-09-05 Revised:2002-11-20 Online:2003-07-20 Published:2003-07-20

摘要/Abstract

摘要： 研究了珠江三干流西江、北江和东江水体中悬浮物颗粒有机碳稳定碳同位素的组成、分布以及季节变化特征。研究结果显示:可以根据C₃、C₄植物及悬浮物的δ¹³C值区分不同流域的植被覆盖状况;东江流域水土流失区以草地、农田为主,C₄植物影响较大;北江水体中颗粒有机碳主要来源于森林覆盖区,同位素组成受C₃植物影响较大;西江水体中颗粒有机碳同位素组成介于其间,同时受C₃、C₄植物影响,颗粒有机碳部分来源于森林覆盖土壤,部分来源于草地和农田。

Abstract: The paper studies the characteristic of the contribution and seasonal change of organic carbon isotope composition(δ¹³C) in the Pearl River. According to the δ¹³C value of C₃, C₄ plant and river suspended matter, we can discern the state of plant covered in different water and soil loss area. The water and soil loss area in the Dongjiang River basin was mainly grassland and cropland. The water and soil loss area in Beijiang River basin was lots of subtropical forests. The results indicated that we can discern the condition of plant covered in different basins. POC of Beijiang mainly originated from forest area and its carbon-isotope composition was affected by C₃ plant. The carbon-isotope composition of Xijiang is between that of Beijiang and Dongjiang's. It indicated that the suspended matter was affected by C₃ and C₄ plant at the same time. And part of POC in Xijiang River originated from the soil covered by forest, some came from grassland and cultivated land.

中图分类号:

P342

魏秀国, 沈承德, 孙彦敏, 易惟熙. 珠江水体悬浮物颗粒有机碳稳定同位素组成及分布特征[J]. 地理科学, 2003, 23(4): 471-476.

WEI Xiu-Guo, SHEN Cheng-De, SUN Yan-Min, YI Wei-Xi. Characteristic of the Organic Carbon-isotope Composition and Contribution of Suspended Matter in the Pearl River[J]. SCIENTIA GEOGRAPHICA SINICA, 2003, 23(4): 471-476.

参考文献

[1] Sackett W M, Thompson R R. Isotopic organic carbon composition of recent continental derived clastic sediments of eastern gulf coast, Gulf of Mexico[J]. Bull. Am. Assoc. Petrol. Geol.,1963,47:525-531.
[2] Sackett W M. The depositional history and isotopic organic carbon composition of marine sediments[J]. Mar. Geol. 1964, 2:173-185.
[3] Hunt J M. The significance of carbon isotope variations in marine sediments. Hobson G D. Advances in Organic Chemistry. Oxford: Pergamon Press, 1970.27-35.
[4] Shultz D J, Carder J A. Organic carbon ¹³C/¹²C variations in estuarine sediments[J]. Geochim. et Cosmochim, Acta,1976,40:381-385.
[5] 蔡德陵,蔡爱智.黄河口区有机碳同位素地球化学[J].中国科学(B辑),1993,23(10):1105~1113.
[6] 蔡德陵,Tan F C.长江口区有机碳同位素地球化学[J].地球化学,1992,21(3):305~311.
[7] Tan F C,Cai D L, Edmond J M. Carbon isotope geochemistry of the Changjiang Estury[J]. Estuaine, Coastal and Shelf Science,1991,32(4):395-403.
[8] 施光春.长江口悬浮颗粒有机碳的稳定同位素[J].海洋通报,1993,12(1):49~53.
[9] Milliman J D, Xie Q C, Yang Z. Transfer of particulate organic carbon and nitrogen from the Yangtze River to the Ocean[J]. American Journal of Science,1984, 284:824-834.
[10] Hedges J I,Quay P D, Richey J E, et al. Composition and fluxes of particulate organic material in the Amazon River[J]. Limnol Oceanogr., 1986, 31(4):717-738.
[11] Hedges J I, Parker P L. Land-derived organic matter in surface sediments from the Gulf of Mexico[J]. Geochim. et Cosmochim,Acta,1976,40:1019-1029.
[12] Mariotti A, Gadel F, Giresse P, et al. Carbon isotope composition and geochemistry of particulate organic matter in the Congo River(Central Africa):Application to the study of Quaternary sediments off the mouth of the river[J]. Chemical Geology(Isotope Geoscience Section),1991,86:345-357.
[13] Pocklington R, Tan F C. Seasonal and annual variations in the organic matter contributed by the St. Lawrence River to the Gulf of St. Lawrence[J]. Geochemica et Cosmochemica Acta,1987,51:2579-2586.
[14] 沈承德,刘东生,彭少麟,等.鼎湖山自然保护区森林土壤¹⁴C测定及¹⁴C示踪初步研究[J].科学通报,1998,43(16):1775~1780.
[15] 高全洲,沈承德,孙彦敏,等.珠江马口站、河口站断面水体有机碳含量的季节变化[J].地球化学,1999,28(3):273~280.
[16] 高全洲,沈承德,孙彦敏,等. 珠江流域的化学侵蚀[J]. 地球化学,2001,31(3):223~230.
[17] 魏秀国,沈承德,孙彦敏,等. 河流、河口沉积物中碳同位素研究[J].自然科学进展,2002,12(11):1135~1139.
[18] Gao Q Z, TAO Z,Shen C D, et al. Riverine organic carbon in the Xijiang River (South China): seasonal variation in content and flux budget[J]. Environmental Geology, 2002,41:826-832.
[19] Dacidson G R. The stable isotope composition and measurement of carbon in soil CO₂[J]. Geochemica et Cosmochemica Acta,1995,59:2485-2489.
[20] Bird M I, Chivas A R, Head J A. Latitudinal gradient in carbon turnover times in forest soils[J]. Nature,1996, (381):143-146.
[21] 林植芳,郭俊彦. 广东的C₄和CAM植物[J].中国科学院华南植物研究所集刊,1986,(2):171~178.
[22] 王永吉,吕厚远,王国安,等. C₃,C₄植物和现代土壤中硅酸体碳同位素分析[J].科学通报,2000,45(9):978~982.
[23] Cauwet G. Distribution and behavior of organic and inorganic carbon in the Changjiang Esturary[A]. Yu G H. Proceedings of the International Symposium on Biogeochemical Study of the Changjiang Esturary and its Adjacent Coastal Waters of the East China Sea[C]. Beijing: China Sea Press,1990.570-588.
[24] 沈承德,易惟熙,孙彦敏,等.鼎湖山森林土壤¹⁴C表观年龄及δ¹³C分布特征[J].第四纪研究,2000,20(4):335~344.

珠江水体悬浮物颗粒有机碳稳定同位素组成及分布特征

Characteristic of the Organic Carbon-isotope Composition and Contribution of Suspended Matter in the Pearl River

PDF (PC)

赞

可视化

被引次数

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 3

Metrics

本文评价

推荐阅读 0

[1]	温煜华, 王乃昂, 朱锡芬, 张华安, 马宏伟, 陈立. 天水及其南北地区地热水水化学特征及起源[J]. 地理科学, 2011, 31(6): 668-673.
[2]	魏秀国, 李宁利, 沈承德, 郭治兴. 西江水体有机碳含量变化及悬浮物碳同位素的意义[J]. 地理科学, 2011, 31(2): 166-171.
[3]	俞雷, 刘洪斌, 武伟. 基于DEM的重庆三峡库区水系提取试验研究[J]. 地理科学, 2006, 26(5): 616-621.